package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.CategoryDTO;
import com.sky.dto.CategoryPageQueryDTO;
import com.sky.entity.Category;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.CategoryMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.CategoryService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.List;

/**
 * 目标:
 *
 * @author YUE
 * @date 2024/6/8 17:49
 */
@Service
public class CategoryServiceImpl implements CategoryService {
    @Autowired
    private CategoryMapper categoryMapper;
    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private SetmealMapper setmealMapper;

    /*
       新增分类
     */
    @Override
    public void add(CategoryDTO categoryDTO) {

        Category c = Category.builder()
                .status(StatusConstant.DISABLE)
                // .updateTime(LocalDateTime.now())
                //  .updateUser(BaseContext.getCurrentId())
                .type(categoryDTO.getType())
                .name(categoryDTO.getName())
                .sort(categoryDTO.getSort())
                //  .createTime(LocalDateTime.now())
                //   .createUser(BaseContext.getCurrentId())
                .build();
        categoryMapper.add(c);
    }

    @Override
    public PageResult page(CategoryPageQueryDTO query) {
        PageHelper.startPage(query.getPage(), query.getPageSize());

        Page<Category> c = categoryMapper.page(query);

        return new PageResult(c.getTotal(), c.getResult());
    }

    /*
       删除分类
     */
    @Override
    public void deleteId(Long id) {
        // 查询当前分类是否关联了菜品 , 关联不能删除 , 报异常
        Integer count = dishMapper.countByCategoryId(id);
        if (count > 0) {
            // 当前分类下有菜品 不能删除
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_DISH);
        }

       count = setmealMapper.countByCategoryId(id);
        if (count > 0){
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_SETMEAL);

        }
        categoryMapper.deleteId(id);
    }


    /*
      修改分类
     */
    @Override
    public void update(CategoryDTO categoryDTO) {
        Category category = new Category();
        BeanUtils.copyProperties(categoryDTO, category);

        //  category.setUpdateTime(LocalDateTime.now());
        //  category.setUpdateUser(BaseContext.getCurrentId());

        categoryMapper.update(category);
    }


    /*
       启用禁用分类
     */
    @Override
    public void startOrStop(Integer status, Long id) {
        Category c = Category.builder()
                .id(id)
                .status(status)
                .updateUser(BaseContext.getCurrentId())
                .createTime(LocalDateTime.now())
                .build();
        categoryMapper.update(c);
    }

    /*
       根据类型查询分页
     */
    @Override
    public List<Category> list(Integer type) {
        return categoryMapper.list(type);
    }
}
